<?php
/**
* ACL Resource Loader
*
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Acl\Loader;

use Magento\Framework\Acl;
use Magento\Framework\Acl\AclResource;
use Magento\Framework\Acl\AclResource\ProviderInterface;
use Magento\Framework\Acl\AclResourceFactory;

/**
* ACL Loader
*/
class ResourceLoader implements \Magento\Framework\Acl\LoaderInterface
{
/**
* Acl resource config
*
* @var ProviderInterface
*/
protected $_resourceProvider;

/**
* Resource factory
*
* @var AclResourceFactory
*/
protected $_resourceFactory;

/**
* @param ProviderInterface $resourceProvider
* @param AclResourceFactory $resourceFactory
*/
public function __construct(ProviderInterface $resourceProvider, AclResourceFactory $resourceFactory)
{
$this->_resourceProvider = $resourceProvider;
$this->_resourceFactory = $resourceFactory;
}

/**
* Populate ACL with resources from external storage
*
* @param Acl $acl
* @return void
* @throws \Zend_Acl_Exception
*/
public function populateAcl(Acl $acl)
{
$this->_addResourceTree($acl, $this->_resourceProvider->getAclResources(), null);
}

/**
* Add list of nodes and their children to acl
*
* @param Acl $acl
* @param array $resources
* @param AclResource $parent
* @return void
* @throws \InvalidArgumentException
* @throws \Zend_Acl_Exception
*/
protected function _addResourceTree(Acl $acl, array $resources, AclResource $parent = null)
{
foreach ($resources as $resourceConfig) {
if (!isset($resourceConfig['id'])) {
throw new \InvalidArgumentException('Missing ACL resource identifier');
}
/** @var $resource AclResource */
$resource = $this->_resourceFactory->createResource(['resourceId' => $resourceConfig['id']]);
$acl->addResource($resource, $parent);
if (isset($resourceConfig['children'])) {
$this->_addResourceTree($acl, $resourceConfig['children'], $resource);
}
}
}
}